PACKAGE CONTENTS - 4 stainless steel whistles with lanyard. You can use it as trainer whistle, referee whistle, sports whistle, gym teacher whistle, police whistle, pet training whistle, trill whistle, emergency whistle, party whistle and more. . PREMIUM QUALITY - Made from food grade 304 stainless steel. Unlike plastic whistles or fake whistles, you don't have to worry about cracking, rusting or corroding no matter how you use them. She still looks brand new. . LOUD AND CLEAR TONE - Thanks to the natural cork dot, the whistle is loud and clear, easily reaching 120dB. It's a simple and effective way to draw attention to yourself in any situation. It also has a louder volume than a plastic whistle. . KEEP YOUR HANDS FREE - For added convenience, we've fitted each stainless steel whistle with a soft nylon lanyard that can free your hands and easily hang around your neck. Note: The data is manual measurement, please allow 1-24cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind shall prevail.